cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A228484 a(n) = 2^n*(3*n)!/(n!*(2*n)!).

Table of values

n a(n)
0 1
1 6
2 60
3 672
4 7920
5 96096
6 1188096
7 14883840
8 188280576
9 2399654400
10 30766095360
11 396363202560
12 5126871859200
13 66538909237248
14 866061993246720
15 11300615801536512
16 147773778404769792
17 1936073567335219200
18 25408660721789829120
19 333963051307735449600

List of values

[1, 6, 60, 672, 7920, 96096, 1188096, 14883840, 188280576, 2399654400, 30766095360, 396363202560, 5126871859200, 66538909237248, 866061993246720, 11300615801536512, 147773778404769792, 1936073567335219200, 25408660721789829120, 333963051307735449600]